// HTMLParser Library - A java-based parser for HTML
// http://htmlparser.org
// Copyright (C) 2006 Derrick Oswald
//
// Revision Control Information
//
// $URL: https://svn.sourceforge.net/svnroot/htmlparser/trunk/lexer/src/main/java/org/htmlparser/http/ConnectionMonitor.java $
// $Author: derrickoswald $
// $Date: 2006-09-16 10:44:17 -0400 (Sat, 16 Sep 2006) $
// $Revision: 4 $
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the Common Public License; either
// version 1.0 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// Common Public License for more details.
//
// You should have received a copy of the Common Public License
// along with this library; if not, the license is available from
// the Open Source Initiative (OSI) website:
//   http://opensource.org/licenses/cpl1.0.php

package org.htmlparser.http;

import java.net.HttpURLConnection;

import org.htmlparser.util.ParserException;

/**
 * Interface for HTTP connection notification callbacks.
 */
public interface ConnectionMonitor {
	/**
	 * Called just prior to calling connect. The connection has been conditioned
	 * with proxy, URL user/password, and cookie information. It is still
	 * possible to adjust the connection, to alter the request method for
	 * example.
	 * 
	 * @param connection
	 *            The connection which is about to be connected.
	 * @exception ParserException
	 *                This exception is thrown if the connection monitor wants
	 *                the ConnectionManager to bail out.
	 */
	void preConnect(HttpURLConnection connection) throws ParserException;

	/**
	 * Called just after calling connect. The response code and header fields
	 * can be examined.
	 * 
	 * @param connection
	 *            The connection that was just connected.
	 * @exception ParserException
	 *                This exception is thrown if the connection monitor wants
	 *                the ConnectionManager to bail out.
	 */
	void postConnect(HttpURLConnection connection) throws ParserException;
}
